Battery pack

Abstract

A battery pack includes a plurality of battery modules that are stackable in a stacking direction, each of the plurality of battery modules extending in a longitudinal direction perpendicular to the stacking direction. Each of the plurality of battery modules includes a battery cell and a cartridge configured to receive the battery cell. The cartridge includes a seat part configured to seat the battery cell, and a heat dissipation part made of a first type of material different from a second type of material of the seat part, the heat dissipation part being configured to absorb heat generated from the battery cell.

What is claimed is: 
     
       1. A battery pack comprising:
 a first plurality of battery modules that are electrically connected to a first ground; 
 a second plurality of battery modules that are electrically connected to a second ground, the second plurality of battery modules being stacked next to the first plurality of battery modules; 
 a separator that is disposed between the first plurality of battery modules and the second plurality of battery modules, the separator being configured to electrically separate the first and second grounds; 
 a bracket that is coupled to the separator and covers a side of each of the first plurality of battery modules and the second plurality of battery modules; 
 a first board assembly is located between the bracket and the side of the first plurality of battery modules; and 
 a second board assembly that is located between the bracket and the side of the second plurality of battery modules, 
 wherein each battery module in the first and second pluralities of battery modules includes a battery cell and a cartridge configured to receive the battery cell, and 
 wherein the cartridge includes:
 a seat part configured to seat the battery cell, and 
 a heat dissipation part made of a first type of material different from a second type of material of the seat part, the heat dissipation part being configured to absorb heat generated from the battery cell. 
 
 
     
     
       2. The battery pack of  claim 1 , wherein the separator includes a cartridge locking step that protrudes from an end of the separator toward the bracket, the cartridge locking step being configured to couple to the first and second pluralities of battery modules.